/*
 * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4635086
 * @library ../UTIL
 * @build TestUtil
 * @run main TestKATForECB_VK
 * @summary Known Answer Test for AES cipher with ECB mode
 * @author Valerie Peng
 */
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.math.*;

import java.util.*;

public class TestKATForECB_VK
{
    private static final String ALGO = "AES";
    private static final String MODE = "ECB";
    private static final String PADDING = "NoPadding";

    //ecb-vk.txt
    private static byte[] PT = new byte[16];

    private static String[][] CTS = {
        // Cipher Texts for 128-bit key
        {
"0EDD33D3C621E546455BD8BA1418BEC8",
"C0CC0C5DA5BD63ACD44A80774FAD5222",
"2F0B4B71BC77851B9CA56D42EB8FF080",
"6B1E2FFFE8A114009D8FE22F6DB5F876",
"9AA042C315F94CBB97B62202F83358F5",
"DBE01DE67E346A800C4C4B4880311DE4",
"C117D2238D53836ACD92DDCDB85D6A21",
"DC0ED85DF9611ABB7249CDD168C5467E",
"807D678FFF1F56FA92DE3381904842F2",
"0E53B3FCAD8E4B130EF73AEB957FB402",
"969FFD3B7C35439417E7BDE923035D65",
"A99B512C19CA56070491166A1503BF15",
"6E9985252126EE344D26AE369D2327E3",
"B85F4809F904C275491FCDCD1610387E",
"ED365B8D7D20C1F5D53FB94DD211DF7B",
"B3A575E86A8DB4A7135D604C43304896",
"89704BCB8E69F846259EB0ACCBC7F8A2",
"C56EE7C92197861F10D7A92B90882055",
"92F296F6846E0EAF9422A5A24A08B069",
"E67E32BB8F11DEB8699318BEE9E91A60",
"B08EEF85EAF626DD91B65C4C3A97D92B",
"661083A6ADDCE79BB4E0859AB5538013",
"55DFE2941E0EB10AFC0B333BD34DE1FE",
"6BFE5945E715C9662609770F8846087A",
"79848E9C30C2F8CDA8B325F7FED2B139",
"7A713A53B99FEF34AC04DEEF80965BD0",
"18144A2B46620D32C3C32CE52D49257F",
"872E827C70887C80749F7B8BB1847C7E",
"6B86C6A4FE6A60C59B1A3102F8DE49F3",
"9848BB3DFDF6F532F094679A4C231A20",
"925AD528E852E329B2091CD3F1C2BCEE",
"80DF436544B0DD596722E46792A40CD8",
"525DAF18F93E83E1E74BBBDDE4263BBA",
"F65C9D2EE485D24701FFA3313B9D5BE6",
"E4FC8D8BCA06425BDF94AFA40FCC14BA",
"A53F0A5CA1E4E6440BB975FF320DE6F8",
"D55313B9394080462E87E02899B553F0",
"34A71D761F71BCD344384C7F97D27906",
"233F3D819599612EBC89580245C996A8",
"B4F1374E5268DBCB676E447529E53F89",
"0816BD27861D2BA891D1044E39951E96",
"F3BE9EA3F10C73CA64FDE5DB13A951D1",
"2448086A8106FBD03048DDF857D3F1C8",
"670756E65BEC8B68F03D77CDCDCE7B91",
"EF968CF0D36FD6C6EFFD225F6FB44CA9",
"2E8767157922E3826DDCEC1B0CC1E105",
"78CE7EEC670E45A967BAB17E26A1AD36",
"3C5CEE825655F098F6E81A2F417DA3FB",
"67BFDB431DCE1292200BC6F5207ADB12",
"7540FD38E447C0779228548747843A6F",
"B85E513301F8A936EA9EC8A21A85B5E6",
"04C67DBF16C11427D507A455DE2C9BC5",
"03F75EB8959E55079CFFB4FF149A37B6",
"74550287F666C63BB9BC7838433434B0",
"7D537200195EBC3AEFD1EAAB1C385221",
"CE24E4D40C68A82B535CBD3C8E21652A",
"AB20072405AA8FC40265C6F1F3DC8BC0",
"6CFD2CF688F566B093F67B9B3839E80A",
"BD95977E6B7239D407A012C5544BF584",
"DF9C0130AC77E7C72C997F587B46DBE0",
"E7F1B82CADC53A648798945B34EFEFF2",
"932C6DBF69255CF13EDCDB72233ACEA3",
"5C76002BC7206560EFE550C80B8F12CC",
"F6B7BDD1CAEEBAB574683893C4475484",
"A920E37CC6DC6B31DA8C0169569F5034",
"919380ECD9C778BC513148B0C28D65FD",
"EE67308DD3F2D9E6C2170755E5784BE1",
"3CC73E53B85609023A05E149B223AE09",
"983E8AF7CF05EBB28D71EB841C9406E6",
"0F3099B2D31FA5299EE5BF43193287FC",
"B763D84F38C27FE6931DCEB6715D4DB6",
"5AE3C9B0E3CC29C0C61565CD01F8A248",
"F58083572CD90981958565D48D2DEE25",
"7E6255EEF8F70C0EF10337AAB1CCCEF8",
"AAD4BAC34DB22821841CE2F631961902",
"D7431C0409BB1441BA9C6858DC7D4E81",
"EF9298C65E339F6E801A59C626456993",
"53FE29F68FF541ABC3F0EF3350B72F7E",
"F6BBA5C10DB02529E2C2DA3FB582CC14",
"E4239AA37FC531A386DAD1126FC0E9CD",
"8F7758F857D15BBE7BFD0E416404C365",
"D273EB57C687BCD1B4EA7218A509E7B8",
"65D64F8D76E8B3423FA25C4EB58A210A",
"623D802B4EC450D66A16625702FCDBE0",
"7496460CB28E5791BAEAF9B68FB00022",
"34EA600F18BB0694B41681A49D510C1D",
"5F8FF0D47D5766D29B5D6E8F46423BD8",
"225F9286C5928BF09F84D3F93F541959",
"B21E90D25DF383416A5F072CEBEB1FFB",
"4AEFCDA089318125453EB9E8EB5E492E",
"4D3E75C6CD40EC4869BC85158591ADB8",
"63A8B904405436A1B99D7751866771B7",
"64F0DAAE47529199792EAE172BA53293",
"C3EEF84BEA18225D515A8C852A9047EE",
"A44AC422B47D47B81AF73B3E9AC9596E",
"D16E04A8FBC435094F8D53ADF25F5084",
"EF13DC34BAB03E124EEAD8B6BF44B532",
"D94799075C24DCC067AF0D392049250D",
"14F431771EDDCE4764C21A2254B5E3C8",
"7039329F36F2ED682B02991F28D64679",
"124EE24EDE5551639DB8B8B941F6141D",
"C2852879A34D5184E478EC918B993FEE",
"86A806A3525B93E432053C9AB5ABBEDF",
"C1609BF5A4F07E37C17A36366EC23ECC",
"7E81E7CB92159A51FFCEA331B1E8EA53",
"37A7BE002856C5A59A6E03EAFCE7729A",
"BDF98A5A4F91E890C9A1D1E5FAAB138F",
"4E96ACB66E051F2BC739CC3D3E34A26B",
"EE996CDD120EB86E21ECFA49E8E1FCF1",
"61B9E6B579DBF6070C351A1440DD85FF",
"AC369E484316440B40DFC83AA96E28E7",
"0A2D16DE985C76D45C579C1159413BBE",
"DA3FDC38DA1D374FA4802CDA1A1C6B0F",
"B842523D4C41C2211AFE43A5800ADCE3",
"9E2CDA90D8E992DBA6C73D8229567192",
"D49583B781D9E20F5BE101415957FC49",
"EF09DA5C12B376E458B9B8670032498E",
"A96BE0463DA774461A5E1D5A9DD1AC10",
"32CEE3341060790D2D4B1362EF397090",
"21CEA416A3D3359D2C4D58FB6A035F06",
"172AEAB3D507678ECAF455C12587ADB7",
"B6F897941EF8EBFF9FE80A567EF38478",
"A9723259D94A7DC662FB0C782CA3F1DD",
"2F91C984B9A4839F30001B9F430493B4",
"0472406345A610B048CB99EE0EF3FA0F",
"F5F39086646F8C05ED16EFA4B617957C",
"26D50F485A30408D5AF47A5736292450",
"0545AAD56DA2A97C3663D1432A3D1C84"
        },
        // Cipher Texts for 192-bit key
        {
"DE885DC87F5A92594082D02CC1E1B42C",
"C749194F94673F9DD2AA1932849630C1",
"0CEF643313912934D310297B90F56ECC",
"C4495D39D4A553B225FBA02A7B1B87E1",
"636D10B1A0BCAB541D680A7970ADC830",
"07CF045786BD6AFCC147D99E45A901A7",
"6A8E3F425A7599348F95398448827976",
"5518276836148A00D91089A20D8BFF57",
"F267E07B5E87E3BC20B969C61D4FCB06",
"5A1CDE69571D401BFCD20DEBADA2212C",
"70A9057263254701D12ADD7D74CD509E",
"35713A7E108031279388A33A0FE2E190",
"E74EDE82B1254714F0C7B4B243108655",
"39272E3100FAA37B55B862320D1B3EB3",
"6D6E24C659FC5AEF712F77BCA19C9DD0",
"76D18212F972370D3CC2C6C372C6CF2F",
"B21A1F0BAE39E55C7594ED570A7783EA",
"77DE202111895AC48DD1C974B358B458",
"67810B311969012AAF7B504FFAF39FD1",
"C22EA2344D3E9417A6BA07843E713AEA",
"C79CAF4B97BEE0BD0630AB354539D653",
"135FD1AF761D9AE23DF4AA6B86760DB4",
"D4659D0B06ACD4D56AB8D11A16FD83B9",
"F7D270028FC188E4E4F35A4AAA25D4D4",
"345CAE5A8C9620A9913D5473985852FF",
"4E8980ADDE60B0E42C0B287FEA41E729",
"F11B6D74E1F15155633DC39743C1A527",
"9C87916C0180064F9D3179C6F5DD8C35",
"71AB186BCAEA518E461D4F7FAD230E6A",
"C4A31BBC3DAAF742F9141C2A5001A49C",
"E7C47B7B1D40F182A8928C8A55671D07",
"8E17F294B28FA373C6249538868A7EEF",
"754404096A5CBC08AF09491BE249141A",
"101CB56E55F05D86369B6D1069204F0A",
"73F19BB6604205C6EE227B9759791E41",
"6270C0028F0D136C37A56B2CB64D24D6",
"A3BF7C2C38D1114A087ECF212E694346",
"49CABFF2CEF7D9F95F5EFB1F7A1A7DDE",
"EC7F8A47CC59B849469255AD49F62752",
"68FAE55A13EFAF9B07B3552A8A0DC9D1",
"211E6B19C69FAEF481F64F24099CDA65",
"DBB918C75BC5732416F79FB0C8EE4C5C",
"98D494E5D963A6C8B92536D3EC35E3FD",
"C9A873404D403D6F074190851D67781A",
"073AEF4A7C77D921928CB0DD9D27CAE7",
"89BDE25CEE36FDE769A10E52298CF90F",
"26D0842D37EAD38557C65E0A5E5F122E",
"F8294BA375AF46B3F22905BBAFFAB107",
"2AD63EB4D0D43813B979CF72B35BDB94",
"7710C171EE0F4EFA39BE4C995180181D",
"C0CB2B40DBA7BE8C0698FAE1E4B80FF8",
"97970E505194622FD955CA1B80B784E9",
"7CB1824B29F850900DF2CAD9CF04C1CF",
"FDF4F036BB988E42F2F62DE63FE19A64",
"08908CFE2C82606B2C15DF61B75CF3E2",
"B3AA689EF2D07FF365ACB9ADBA2AF07A",
"F2672CD8EAA3B98776660D0263656F5C",
"5BDEAC00E986687B9E1D94A0DA7BF452",
"E6D57BD66EA1627363EE0C4B711B0B21",
"03730DD6ACB4AD9996A63BE7765EC06F",
"A470E361AA5437B2BE8586D2F78DE582",
"7567FEEFA559911FD479670246B484E3",
"29829DEA15A4E7A4C049045E7B106E29",
"A407834C3D89D48A2CB7A152208FA4ED",
"68F948053F78FEF0D8F9FE7EF3A89819",
"B605174CAB13AD8FE3B20DA3AE7B0234",
"CCAB8F0AEBFF032893996D383CBFDBFA",
"AF14BB8428C9730B7DC17B6C1CBEBCC8",
"5A41A21332040877EB7B89E8E80D19FE",
"AC1BA52EFCDDE368B1596F2F0AD893A0",
"41B890E31B9045E6ECDC1BC3F2DB9BCC",
"4D54A549728E55B19A23660424A0F146",
"A917581F41C47C7DDCFFD5285E2D6A61",
"604DF24BA6099B93A7405A524D764FCB",
"78D9D156F28B190E232D1B7AE7FC730A",
"5A12C39E442CD7F27B3CD77F5D029582",
"FF2BF2F47CF7B0F28EE25AF95DBF790D",
"1863BB7D193BDA39DF090659EB8AE48B",
"38178F2FB4CFCF31E87E1ABCDC023EB5",
"F5B13DC690CC0D541C6BA533023DC8C9",
"48EC05238D7375D126DC9D08884D4827",
"ACD0D81139691B310B92A6E377BACC87",
"9A4AA43578B55CE9CC178F0D2E162C79",
"08AD94BC737DB3C87D49B9E01B720D81",
"3BCFB2D5D210E8332900C5991D551A2A",
"C5F0C6B9397ACB29635CE1A0DA2D8D96",
"844A29EFC693E2FA9900F87FBF5DCD5F",
"5126A1C41051FEA158BE41200E1EA59D",
"302123CA7B4F46D667FFFB0EB6AA7703",
"A9D16BCE7DB5C024277709EE2A88D91A",
"F013C5EC123A26CFC34B598C992A996B",
"E38A825CD971A1D2E56FB1DBA248F2A8",
"6E701773C0311E0BD4C5A097406D22B3",
"754262CEF0C64BE4C3E67C35ABE439F7",
"C9C2D4C47DF7D55CFA0EE5F1FE5070F4",
"6AB4BEA85B172573D8BD2D5F4329F13D",
"11F03EF28E2CC9AE5165C587F7396C8C",
"0682F2EB1A68BAC7949922C630DD27FA",
"ABB0FEC0413D659AFE8E3DCF6BA873BB",
"FE86A32E19F805D6569B2EFADD9C92AA",
"E434E472275D1837D3D717F2EECC88C3",
"74E57DCD12A21D26EF8ADAFA5E60469A",
"C275429D6DAD45DDD423FA63C816A9C1",
"7F6EC1A9AE729E86F7744AED4B8F4F07",
"48B5A71AB9292BD4F9E608EF102636B2",
"076FB95D5F536C78CBED3181BCCF3CF1",
"BFA76BEA1E684FD3BF9256119EE0BC0F",
"7D395923D56577F3FF8670998F8C4A71",
"BA02C986E529AC18A882C34BA389625F",
"3DFCF2D882AFE75D3A191193013A84B5",
"FAD1FDE1D0241784B63080D2C74D236C",
"7D6C80D39E41F007A14FB9CD2B2C15CD",
"7975F401FC10637BB33EA2DB058FF6EC",
"657983865C55A818F02B7FCD52ED7E99",
"B32BEB1776F9827FF4C3AC9997E84B20",
"2AE2C7C374F0A41E3D46DBC3E66BB59F",
"4D835E4ABDD4BDC6B88316A6E931A07F",
"E07EFABFF1C353F7384EBB87B435A3F3",
"ED3088DC3FAF89AD87B4356FF1BB09C2",
"4324D01140C156FC898C2E32BA03FB05",
"BE15D016FACB5BAFBC24FA9289132166",
"AC9B7048EDB1ACF4D97A5B0B3F50884B",
"448BECE1F86C7845DFA9A4BB2A016FB3",
"10DD445E87686EB46EA9B1ABC49257F0",
"B7FCCF7659FA756D4B7303EEA6C07458",
"289117115CA3513BAA7640B1004872C2",
"57CB42F7EE7186051F50B93FFA7B35BF",
"F2741BFBFB81663B9136802FB9C3126A",
"E32DDDC5C7398C096E3BD535B31DB5CE",
"81D3C204E608AF9CC713EAEBCB72433F",
"D4DEEF4BFC36AAA579496E6935F8F98E",
"C356DB082B97802B038571C392C5C8F6",
"A3919ECD4861845F2527B77F06AC6A4E",
"A53858E17A2F802A20E40D44494FFDA0",
"5D989E122B78C758921EDBEEB827F0C0",
"4B1C0C8F9E7830CC3C4BE7BD226FA8DE",
"82C40C5FD897FBCA7B899C70713573A1",
"ED13EE2D45E00F75CCDB51EA8E3E36AD",
"F121799EEFE8432423176A3CCF6462BB",
"4FA0C06F07997E98271DD86F7B355C50",
"849EB364B4E81D058649DC5B1BF029B9",
"F48F9E0DE8DE7AD944A207809335D9B1",
"E59E9205B5A81A4FD26DFCF308966022",
"3A91A1BE14AAE9ED700BDF9D70018804",
"8ABAD78DCB79A48D79070E7DA89664EC",
"B68377D98AAE6044938A7457F6C649D9",
"E4E1275C42F5F1B63D662C099D6CE33D",
"7DEF32A34C6BE668F17DA1BB193B06EF",
"78B6000CC3D30CB3A74B68D0EDBD2B53",
"0A47531DE88DD8AE5C23EAE4F7D1F2D5",
"667B24E8000CF68231EC484581D922E5",
"39DAA5EBD4AACAE130E9C33236C52024",
"E3C88760B3CB21360668A63E55BB45D1",
"F131EE903C1CDB49D416866FD5D8DE51",
"7A1916135B0447CF4033FC13047A583A",
"F7D55FB27991143DCDFA90DDF0424FCB",
"EA93E7D1CA1111DBD8F7EC111A848C0C",
"2A689E39DFD3CBCBE221326E95888779",
"C1CE399CA762318AC2C40D1928B4C57D",
"D43FB6F2B2879C8BFAF0092DA2CA63ED",
"224563E617158DF97650AF5D130E78A5",
"6562FDF6833B7C4F7484AE6EBCC243DD",
"93D58BA7BED22615D661D002885A7457",
"9A0EF559003AD9E52D3E09ED3C1D3320",
"96BAF5A7DC6F3DD27EB4C717A85D261C",
"B8762E06884900E8452293190E19CCDB",
"785416A22BD63CBABF4B1789355197D3",
"A0D20CE1489BAA69A3612DCE90F7ABF6",
"700244E93DC94230CC607FFBA0E48F32",
"85329E476829F872A2B4A7E59F91FF2D",
"E4219B4935D988DB719B8B8B2B53D247",
"6ACDD04FD13D4DB4409FE8DD13FD737B",
"9EB7A670AB59E15BE582378701C1EC14",
"29DF2D6935FE657763BC7A9F22D3D492",
"99303359D4A13AFDBE6C784028CE533A",
"FF5C70A6334545F33B9DBF7BEA0417CA",
"289F58A17E4C50EDA4269EFB3DF55815",
"EA35DCB416E9E1C2861D1682F062B5EB",
"3A47BF354BE775383C50B0C0A83E3A58",
"BF6C1DC069FB95D05D43B01D8206D66B",
"046D1D580D5898DA6595F32FD1F0C33D",
"5F57803B7B82A110F7E9855D6A546082",
"25336ECF34E7BE97862CDFF715FF05A8",
"ACBAA2A943D8078022D693890E8C4FEF",
"3947597879F6B58E4E2F0DF825A83A38",
"4EB8CC3335496130655BF3CA570A4FC0",
"BBDA7769AD1FDA425E18332D97868824",
"5E7532D22DDB0829A29C868198397154",
"E66DA67B630AB7AE3E682855E1A1698E",
"4D93800F671B48559A64D1EA030A590A",
"F33159FCC7D9AE30C062CD3B322AC764",
"8BAE4EFB70D33A9792EEA9BE70889D72"
        },
        // Cipher Texts for 256-bit key
        {
"E35A6DCB19B201A01EBCFA8AA22B5759",
"5075C2405B76F22F553488CAE47CE90B",
"49DF95D844A0145A7DE01C91793302D3",
"E7396D778E940B8418A86120E5F421FE",
"05F535C36FCEDE4657BE37F4087DB1EF",
"D0C1DDDD10DA777C68AB36AF51F2C204",
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        }
    };

    private static int[] KEY_SIZES = {
        16, 24, 32
    };

    /**
     * Constructs an AES Key according to the specified key size and
     * round number.
     * @param len key size in bytes, i.e. 16, 24, or 32
     * @param rounds round number starting from 0, i.e. valid from 0 to len-1.
     */
    private static SecretKey constructAESKey(int len, int rounds)
        throws IllegalArgumentException {
        if ((len != 16) && (len != 24) && (len != 32)) {
            throw new IllegalArgumentException("Wrong Key Length: " + len);
        }
        byte[] rawKeyValue = constructKeyValue(len, rounds);
        SecretKeySpec key = new SecretKeySpec(rawKeyValue, "AES");
        return key;
    }

    private static byte[] constructKeyValue(int keysize, int rounds) {
        byte[] tempKeyValue = new byte[keysize];
        Arrays.fill(tempKeyValue, (byte)0);

        int whichByte = rounds/8;
        int whichDigit = rounds % 8;
        if ((whichByte >= keysize) || (whichDigit < 0) ||
            (whichDigit > 8)) {
            throw new IllegalArgumentException("Invalid keysize/rounds " +
                                               "combination :" + keysize +
                                               "/" + rounds);
        }
        switch (whichDigit) {
        case 0:
            tempKeyValue[whichByte] = (byte)0x80;
            break;
        case 1:
            tempKeyValue[whichByte] = (byte)0x40;
            break;
        case 2:
            tempKeyValue[whichByte] = (byte)0x20;
            break;
        case 3:
            tempKeyValue[whichByte] = (byte)0x10;
            break;
        case 4:
            tempKeyValue[whichByte] = (byte)0x08;
            break;
        case 5:
            tempKeyValue[whichByte] = (byte)0x04;
            break;
        case 6:
            tempKeyValue[whichByte] = (byte)0x02;
            break;
        case 7:
            tempKeyValue[whichByte] = (byte)0x01;
            break;
        }
        return tempKeyValue;
    }

    private static byte[] constructByteArray(String s) {
        int len = s.length()/2;
        byte[] tempValue = new byte[len];
        for (int i = 0; i < len; i++) {
            tempValue[i] = Integer.valueOf(s.substring(2*i, 2*i+2),
                                           16).byteValue();
        }
        return tempValue;
    }

    public boolean execute() throws Exception {
        String transformation = ALGO+"/"+MODE+"/"+PADDING;
        Cipher c = Cipher.getInstance(transformation, "SunJCE");

        for (int i=0; i<KEY_SIZES.length; i++) {
            if (KEY_SIZES[i]*8 >
                Cipher.getMaxAllowedKeyLength(transformation)) {
                // skip if this key length is larger than what's
                // configured in the jce jurisdiction policy files
                continue;
            }
            int rounds = KEY_SIZES[i] * 8;
            byte[] plainText = PT;
            byte[] cipherText = null;
            try {
            for (int j=0; j < rounds; j++) {
                SecretKey aesKey = constructAESKey(KEY_SIZES[i], j);
                c.init(Cipher.ENCRYPT_MODE, aesKey);
                cipherText = c.doFinal(plainText);
                byte[] answer = constructByteArray(CTS[i][j]);
                if (!Arrays.equals(cipherText, answer)) {
                    throw new Exception((i+1) + "th known answer test failed for encryption");
                }
                c.init(Cipher.DECRYPT_MODE, aesKey);
                byte[] restored = c.doFinal(cipherText);
                if (!Arrays.equals(plainText, restored)) {
                    throw new Exception((i+1) + "th known answer test failed for decryption");
                }
            }
            System.out.println("Finished KAT for " + KEY_SIZES[i] + "-byte key");
            } catch (SecurityException se) {
                TestUtil.handleSE(se);
            }
        }

        // passed all tests...hooray!
        return true;
    }

    public static void main (String[] args) throws Exception {
        TestKATForECB_VK test = new TestKATForECB_VK();
        String testName = test.getClass().getName() + "[" + ALGO +
            "/" + MODE + "/" + PADDING + "]";
        if (test.execute()) {
            System.out.println(testName + ": Passed!");
        }
    }
}
